Bug 1894567 (CVE-2020-25692) - CVE-2020-25692 openldap: NULL pointer dereference for unauthenticated packet in slapd
Summary: CVE-2020-25692 openldap: NULL pointer dereference for unauthenticated packet ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-25692
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1895288 1895328
Blocks: 1894568
TreeView+ depends on / blocked
 
Reported: 2020-11-04 14:09 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-04-27 16:46 UTC (History)
46 users (show)

Fixed In Version: openldap 2.4.55
Doc Type: If docs needed, set a value
Doc Text:
A NULL pointer dereference flaw was found in the OpenLDAP server, during a request for renaming RDNs. This flaw allows a remote, unauthenticated attacker to crash the slapd process by sending a specially crafted request, causing a denial of service. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2021-04-27 16:46:34 UTC
spichugi: needinfo-

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Description Guilherme de Almeida Suckevicz 2020-11-04 14:09:18 UTC 
OpenLDAP slapd crashes on what seems to be a null-ptr-dereference after receiving a malicious TCP packet.

Reference:
https://bugs.openldap.org/show_bug.cgi?id=9370
Comment 1 Cedric Buissart 2020-11-06 08:47:35 UTC 
Created openldap tracking bugs for this issue:

Affects: fedora-all [bug 1895288]
Comment 3 Cedric Buissart 2020-11-10 08:55:12 UTC 
Upstream fixes:
Main branch :
https://git.openldap.org/openldap/openldap/-/commit/6abfd60078af02d56edb3b6897692cdd09a08971
https://git.openldap.org/openldap/openldap/-/commit/a08a2db4063f54a6217a0f091aebd02f8bdb482e

2.4 branch :
https://git.openldap.org/openldap/openldap/-/commit/4c774220a752bf8e3284984890dc0931fe73165d
Comment 6 RaTasha Tillery-Smith 2020-12-08 15:55:26 UTC 
Statement:

This vulnerability affects the server side only. As a result, OpenLDAP client components, such as the component shipped in Red Hat Enterprise Linux 8, are not affected by this flaw.
Comment 10 errata-xmlrpc 2021-04-27 11:33:12 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2021:1389 https://access.redhat.com/errata/RHSA-2021:1389
Comment 11 Product Security DevOps Team 2021-04-27 16:46:34 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-25692
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